cassini and mer telecom - k6sa.net

Mark M. SchaeferWB6CIAJet Propulsion Laboratory

Cassini and MER Telecom

SARA Monthly Meeting5/5/2010

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Cassini Launch Oct 15, 1997 Extended Mission to 2020

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LGA2-RLGA1-R

HGA-R

HGA-L

LGA1-LLGA2-L

DST-A

TCU-A

DST-B

USO

XTWTA-A

XTWTA-B

DIPLEXER

CDS-A

CDS-B3dB

DIPLEXER

TCU-B WTS-3

WTS-4

WTS-1

WTS-2

Cassini Radio Frequency Subsystem

X-Band Telecom Block Diagram

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DST – Deep Space Transponder

TCU – Telemetry Control UnitUSO – Ultra Stable Oscillator

XTWTA – X-Band Traveling Wave Tube Amplifier

DIPLEXER – TR Filters

HGA – High Gain Antenna for S/Ku/X/Ka with Right and Left Circular Polar Feeds

LGA – X-Band Low Gain Antennas 1 and 2 with RCP and LCP feeds

WTS – Waveguide Transfer Switch

PSA – Probe Support Equipment

SBT – S-Band Transmitter

KEX – Ka-Band Exciter

KAT – Ka-Band TranslatorKaTWTA – Ka-Band Traveling Wave Tube Amplifier

RADAR – Ku Band Radar for Titan

CDS – Command and Data Subsystem

RPWS – Radio Plasma Wave Subsystem

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HGA-KaRHGA-KaL

HGA-S

HGA-Ku Feeds

PSA w/USO

SBT

KEX

KAT KaTWTA

RADAR

3dB

RPWS RPWS Dipoles

X-BandFreq Ref

CDS A/B

Cassini Radio Frequency Instrument Subsystem

Ku-Band RADARRadio Plasma Wave Subsystem

Block Diagrams

CDS A/B

CDS A/B

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Cassini

RFS and RFIS are behind Thermal Control

Louvers

HGA and LGA1 is on Top

LGA2 is on top of Thruster


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Cassinibackside


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CassiniSolar Thermal

Vacuum Test in 25 ft Chamber


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CassiniAssembly Test and

Launch Operations at Kennedy Space Center

Payload Hazardous Servicing Facility


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Cassini Ready for Lauch atop

Titan IVB with Centaur Upper Stage


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Cassini Roll out to Pad

ThenLaunch!


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SOI

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Cassini Science


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Huygens ProbeDual Channel S-Band Transmitter to Cassini Orbiter

Cassini Probe Support EquipmentDual S-Band Receivers with one USO for Doppler Wind Experiment

USO not commanded On missed some photos. Ground Stations able to reconstruct Doppler. S/C trajectory redesigned for Doppler to

match Receiver’s narrow Symbol Loop


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TITANVia Huygens

Descent Camera


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DeepSpace

Network70 Mtr Dish

also 35 mtr dishes in

GoldstoneMadrid

Camberra


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Mars Exploration RoverSpirit and Opportunity


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MERSeparations from Delta II

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MER Cruise Configuration


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MER Cruise Components


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MERLander

Open with Rover

enclosed


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MER Lander Components


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MER Open Lander Components


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MER RoverExterior

Components


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MERVs.

Pathfinder


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WTS

Polarizer

RLGA

BLGA

CLGACMGA

HGA

PLGA

RAS

RAS Patch Ant

RUHF

LUHF

SPDTSPDT

UHF XCVR

UHF DIP

SPDT

SDST

SSPA-A

SSPA-BDIPLEXER

3dB

SPDT

Polarizer

Rover Warm Equipment BoxRover Solar Panel Deck

Lander

Backshell

Cruise Stage

Mars Exploration Rover Telecommunication Subsystem

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MERX-Band Telecom HardwareInstalled on

Test and Handling Fixture


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Typical Opportunity Photo


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Typical Spirit Photo


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Recent Opportunity PhotoRock called Chocolate Hills the size of a loaf of bread


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Recent Opportunity Photo 3cm wide“Aloya” Blueberries on Chocolate Hills


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Latest Spirit Photo Dug in for the winter - last transmission March 22


cassini and mer telecom - k6sa.net

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